nvme_get_fe...ost_mem_buf2(2)

✨ nvme_get_features_host_mem_buf2 ✨

okay bestie, we're in the libnvme API manual and this one is a lil function called nvme_get_features_host_mem_buf2 — it literally just gets the host memory buffer feature. that's the whole vibe. it's giving "ask the drive politely for its HMB tea" 🫖💅

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🌸 SYNOPSIS 🌸

int nvme_get_features_host_mem_buf2 (int fd , enum nvme_get_features_sel
sel , struct nvme_host_mem_buf_attrs *attrs , __u32 *result );

like yes, four args, she's got range 💖

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🎀 ARGUMENTS 🎀

• fd — the file descriptor of your nvme device. your lil ticket to the drive, no cap 🎫
• sel — which type of attribute to return, fr fr. check enum nvme_get_features_sel for the deets 👀
• attrs — a buffer where the returned Host Memory Buffer Attributes land. she holds the goods 🧺✨
• result — the command completion result from CQE dword0. yep, it's a __u32 * and it's iconic 👑

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💫 RETURN 💫

so here's the tea: you get the nvme command status if a response was received — peep enum nvme_status_field for that whole situation — or you get -1 with errno set otherwise 😭

not me getting -1… bestie check errno, that's where the lore is 🙈

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🦋 SEE ALSO 🦋

• enum nvme_get_features_sel
• enum nvme_status_field
• errno

iykyk 💜

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that's the whole page, periodt. this lil cutie came out of the libnvme API manual dated July 2026 🌈🫶 if you ever forget any of it, the manpage is right there being its iconic self. mwah 💋

bye bestie, go get that host memory buffer feature 💖✨